I have a fujitsu siemens c771 monitor and I use 3dfx banshee.I can not get full screen display size under 800*600. In addition,the refresh rate can only be set 65Hz, if I set it higher than it, the display size will get much smaller and dark. If I change to 1024*768 mode, I got the same problem. The display size is too small and dark. Before I use this new monitor, I use a compaq 15 inch monitor, there is no problem at all. Is there any problem with the monitor and video card?